Permanent Audio Stream

Permanent Audio Stream (PAS) is a feature in Zenitel Devices enabling transmission of RTP audio streams outside a call. Devices can be configured to permanently transmit up to two RTP streams (configurable). The RTP audio will be sent to a given IP address/port with configured codec.

The configuration page for PAS is not available from the web interface of the device. To access the PAS Settings use the following url: <ipaddress>/goform/zForm_stream_config

Optional settings:

• Configure the PAS to transmit RTP audio only during a call.
• Configure the PAS to transmit RTP audio only when the call is initiated from a specific DAK key.

The PAS web page:

Permanent Audio configuration page (Firmware ver. 9)

• Remote Domain: The IP address to which the RTP audio will be sent
• Remote Port: The port number to which the RTP audio will be sent
• Codec: Which audio codec to use. Options are: g711a (default), g711u, g722, L16x16D, L16x48D, PCM16, PCM48
• Enable Condition:
  • RTP Stream Always Enabled: Audio stream is permanently transmitted (default)
  • RTP Stream Enabled During Call: Audio stream is transmitted only when there is an active call
  • RTP Stream Started With DAK Key: Audio stream is transmitted only when the call is initiated from a specific DAK key.
• Volume: Can be adjusted from -20dB to + 20dB

Direct Access Key Settings:
This setting enables an option to stream audio only when the call is initiated from a specific DAK key. Options are:

• Do Not Record Call
• Record Call Started With This Key

The PAS web page in firmware 8 and earlier

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Permanent Audio configuration page

Tools like VS-Recorder 2.0 can be used to record the actual RTP audio.

In Turbine Video stations the Permanent audio stream is removed on TCIV from sw 4.11, but available on TCIV+